JIRA REST API oAuth返回签名无效

Question

我正在使用我在GitHub上找到的Client来使用JIRA的REST API并使用oAuth进行授权。 JIRA返回无效签名。这是我的代码：     

 use Illuminate\Foundation\Bus\DispatchesJobs;
 use Illuminate\Routing\Controller as BaseController;
 use App\Jira\JiraClient;

 class RestAPIController extends BaseController
 {
     use DispatchesJobs;
     public function get()
     {
       $config['base_url']= env('JIRA_ADRESS');
       $config['private_key']= app_path().env('PRIVATE_KEY');
       $config['consumer_key']= env('CONSUMER_KEY');
       $config['consumer_secret']= app_path().env('CONSUMER_SECRET');
       $config['callback_url']= env('CALLBACK');
       $client = new JiraClient($config);
       $client->init();
       //$issue = $client -> getIssue('TP-115');
       return view('issue',['issue' => $issue]);
     }
 }

这是返回的错误： Error
我使用这些属性：

JIRA_ADRESS=localhost:8015/
PRIVATE_KEY=\Jira\Api\Authentication\jira.pem
CONSUMER_SECRET=qwerty123
CONSUMER_KEY=hardcoded-consumer
CALLBACK=http://localhost:8000/get